JPH081078B2 - Detachment device for pipe with flange - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an interceptor, a flanged pipe such as a trap pipe attached to a tank or the like, and a general flanged pipe attaching / detaching device.

[0002]

2. Description of the Related Art Generally, flanged pipes are connected by matching the flange surfaces of both flanged pipes and fastening several flanges with bolts or the like. Once connected, they can be easily attached and detached. I couldn't. As an example in which the flanged tube needs to be attached and detached, a case of a trap tube that constitutes an outlet in the interceptor and its tank is considered.

In the interceptor, purified water is made to flow from the trap pipe constituting the outlet in the tank to the outflow pipe outside the tank and discharged to the sewer. The trap pipe has a flange and flows out. It is connected to a pipe.

[0004] A small amount of oil and fat contained in the drainage adheres to the inner surface of the outflow pipe, and eventually the inner diameter of the outflow pipe becomes small, and the drainage capacity is diminished or impossible. Therefore, the trap pipe is occasionally removed for cleaning. There is a need. It is also necessary to clean the inside of the trap tube and interceptor tank.

Therefore, as a device for easily attaching and detaching a trap tube which is a flanged tube, it has hitherto been used as a device.
There was an outflow pipe attachment / detachment device for an interceptor described in Japanese Patent No. 2313. This is because the trap tube can be easily attached / detached to / from the inner wall of the interceptor body with one touch, so that the outflow tube and the like can be easily cleaned. However, in this publication, the trap pipe is described as an outflow pipe, and the outflow pipe is described as a discharge pipe.

[0006]

However, in this conventional device, a large number of parts are required for the attachment / detachment device, the structure is complicated, and many expensive parts are required. It was Therefore, there is a drawback that the cost becomes high. In addition, there is a drawback that installation of the device is troublesome. In addition, there was a drawback that a considerable amount of force was required when attaching and detaching the tube, although it was a one-touch operation.

Therefore, the present invention has been made in order to eliminate the above-mentioned drawbacks, has a simple structure, has a small number of parts, can be installed easily, can reduce the cost, and can be attached and detached at the time of attaching and detaching the pipe. It is an object of the present invention to provide a device for attaching and detaching a flanged pipe that requires less force.

[0008]

DISCLOSURE OF THE INVENTION A flanged pipe attaching / detaching device according to the present invention has a structure in which a pipe with another flange is detachably connected to a pipe end opened on a wall surface through a packing. Around the open pipe end, a substantially U-shaped flange guide for positioning the flange and the packing is fixed, and at a plurality of positions on the peripheral end of the flange guide,
Fix the clamp metal fitting with the toggle device, insert the packing and the flange of the flanged pipe along the flange guide, and operate the clamp metal fitting to press multiple points on the circumference of the flange surface. It is characterized in that the flange is crimped and fixed to the wall surface via the packing, or the crimp is released to detach the flanged pipe.

[0009]

In the flanged pipe attaching / detaching device having the above structure, in order to mount the flanged pipe from the detached state, first, in the state in which the packing is mounted on the flange guide, the joint surface of the flanged pipe is attached. Push it down along the flange guide and fit it securely into the flange guide. At this time, the flange is supported by the clamp metal fittings attached to the peripheral end of the flange guide, and the flanged pipe is held without falling off even if the hand is released. Next, operate the clamp fitting with the toggle device to press at least two locations corresponding to the horizontal diametrical direction on the circumference of the flange surface, and crimp the flange to the wall surface via packing to fix it. The connection is completed without leakage.

When removing the flanged pipe, the pressing by the clamp fitting that has fixed the flange is released, and the flanged pipe is pulled up to complete the removal. When the pressure applied by the clamp fitting is released, the flange is supported by the clamp fitting attached to the peripheral end of the flange guide, and the flanged pipe does not drop even if the hand is released.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of a flanged pipe attaching / detaching device of the present invention will be described with reference to the drawings.

FIG. 1, FIG. 2 and FIG. 3 show a state in which a trap tube is attached to the inner wall of the interceptor body as an embodiment of the present invention. In connecting the trap pipe flange 4 provided at the outlet end of the trap pipe 3 to the outflow pipe 2 which is opened in the inner wall of the box-shaped interceptor body 1 and projects to the outside of the container through the packing 5, the interceptor body 1 Around the open pipe end of the inner wall surface, a substantially U-shaped flange guide 6 for positioning the flange 4 and the packing 5 is fixed with bolts, and a toggle device is provided at two locations on the peripheral end of the flange guide 6. The clamp metal fittings 7 and 8 are fixed with bolts and nuts.

The flange guide 6 has a sufficient thickness such that both the flange 4 and the packing 5 are lined up, and the clamp metal fittings 7 and 8 having a toggle device connect the flange 4 and the packing 5 to each other. When I followed Guide 6,
The flange 4 is provided at a position to support it from above so that the trap tube does not drop even if the hand is released.

Clamp metal fittings 7 and 8 having a toggle device
Is commercially available and uses the lever principle,
Here, when the handles 7a and 8a are pushed, the pressing portions 7b and 8b are pushed.
Is lowered and pressed with strong force. It is not particularly limited to this type, and other types of clamp fittings may be used.

The packing 5 made of a material such as rubber is placed along the flange guide 6 and brought into close contact with the inner wall, and the joint surface of the trap tube flange 4 is pushed down along the packing 5 and is tightly fitted in the flange guide 6. Subsequently, the grips 7a and 8a of the clamp fittings 7 and 8 are pushed, and the flange 4 is pressed and fixed to the inner wall surface through the packing 5 by the strong force of the pressing portions 7b and 8b of the clamp fittings to leak the trap tube. Can be installed without.

The pressing portions 7b and 8b of the clamp metal fittings are pressed to the flange 4 in the vicinity of the central portions of both sides of the flange in the horizontal diametrical direction of the pipe as shown in FIG. 2, and can be most effectively fixed.

When the grips 7a and 8a of the clamp fitting are pulled, the pressing portions 7b and 8b are raised and the pressing can be released. In this state, the trap tube can be removed simply by pulling it up.

The above-described structure and the attaching / detaching method can be applied to other general flanged pipes.

In the above-mentioned embodiment, only two places are described to be pressed by the clamp fittings, but three or more clamp fittings may be attached so as to press at three or more locations.

[0020]

According to the present invention, since the device for attaching and detaching is only the U-shaped flange guide and the commercially available clamp fitting, the structure is simple and the number of parts is small. Therefore, failures can be reduced and costs can be reduced. Further, since the operation of the handle of the clamp fitting does not require much force, it is easy to attach and detach as a whole, and there is an extremely beneficial effect such as no force is required.

[Brief description of drawings]

FIG. 1 is a cutaway side view of a main part of an embodiment of the present invention.

FIG. 2 is a front view of the same.

3 is a cross-sectional view taken along the line AA of FIG.

[Explanation of symbols]

 1 Interceptor body 2 Outflow pipe 3 Trap pipe 4 Flange 5 Packing 6 Flange guide 7 Clamp metal 7a Handle 7b Pressing part 8 Clamp metal 8a Handle 8b Pressing part

Claims (1)

[Claims] 1. A method for positioning a flange and a packing around the open pipe end of the wall face when detachably connecting another pipe with a flange to the pipe end opened to the wall face via a packing. Of the U-shaped flange guide is fixed, and clamp fittings having a toggle device are fixed at a plurality of positions on the peripheral end of the flange guide. The packing and the flange of the flanged pipe are attached along the flange guide. Insert, and operate the clamp metal fittings to press multiple points on the circumference of the flange surface, crimp the flange to the wall surface through the packing to fix it, or release the crimp to remove the flanged pipe. Detachment device for pipe with flange, characterized by detaching.